Science Crime Busters

Coaches & volunteers-
Team-

11/3/09 Go through the Science Crime Buster notes to familiarize yourself with the different procedures you will be doing in the event.

---

Resources-

Great Website - Worksheets, notes & lesson plans

---

Plastics Website
Hudson Invite-
Test
Answer Key

SO Events- Science Crime Busters

Nat Event Supervisor's website

Polymer Density

Current Topic to Research-

---

Study the information on the Nat Event Supervisor's Website, including the section at the top-Especially for Science Crime Busters Events Supervisors.

Powder

Black

Yellow

H20

HCL

PH Paper 2008

PH Paper 2008

new ph

Anhydrous Sodium Acetate

Dark white Powder

dissolves fast

Powdery Not Full White

A

Dissolved

N

7

7

White Sand

Foggy Crystals Some Clear

Greyish Crystally, Grainy not traslucent

B

None

N

6

5.75

Calcium Carbonate

Powder whiter then A

Powdery , Clumpy,

Clumpy whiter then A

C

H20 turned whites

F

4

8

Vit C

Small Crystal like close to B

Clear, Crystally, Clumpy

D

Powder sinks

N

2

2

Salt

crystally darker d+b

crystally clear

E

Dissolved

N

4

5

sugar

can clump up,

whiter then dv

dbe

clear clumpy

F

Dissolved

N

4

5.75

flour

powdery between a and c color

same as black

G

Tan color water

N

4

5.5

gyspsum

grayish whitish lumps

H

Bottom

Turns white

N

4

5

cornstarch

I

Make H2O White

N

4

6.25

baking soda

smallest so far size crystal

same as black team

J

Dissolved

F

8

8

powder gelatin

small yellow salt grain

K

Jelly

N

4

6

powdered alkasel

alka seltzer

small powdered grain so far

L

Fizzle

N

6

6

yest

small yellow brownish eregular balls

M

None

N

6

7

Real Table

Powder

Black

Yellow

H20

HCL

PH Paper 2008

PH Paper 2008

Anhydrous Sodium Acetate

Dark white Powder

dissolves fast

Powdery Not Full White

A

Dissolved

N

7

7

White Sand

Foggy Crystals Some Clear

Greyish Crystally, Grainy not traslucent

B

None

N

6

5.75

Calcium Carbonate

Powder whiter then A

Powdery , Clumpy,

Clumpy whiter then A

C

H20 turned whites

F

4

8

Vit C

Small Crystal like close to B

Clear, Crystally, Clumpy

D

Powder sinks

N

2

2

Salt

crystally darker d+b

crystally clear

E

Dissolved

N

4

5

sugar

can clump up,

whiter then dv

dbe

clear clumpy

F

Dissolved

N

4

5.75

flour

powdery between a and c color

same as black

G

Tan color water

N

4

5.5

gyspsum

grayish whitish lumps

H

Bottom

Turns white

N

4

5

cornstarch

I

Make H2O White

N

4

6.25

baking soda

smallest so far size crystal

same as black team

J

Dissolved

F

8

8

powder gelatin

small yellow salt grain

K

Jelly

N

4

6

powdered alkasel

alka seltzer

small powdered grain so far

L

Fizzle

N

6

6

yest

small yellow brownish eregular balls

M

None

N

6

7

Enter the substances in the table. Make sure we can edit the table and copy the table. If not, we may need to do this in an embedded file.
Test substances in class (closed toed shoes, long pants/skirts are required) and complete the table.
Use table/test results to develop a dichotomous key. You won't have time to perform every test on every powder. Based on your initial observation, you need to be able to narrow down the possible powders and only perform the necessary tests on each powder.